Improvement in sectional steam-boilers



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L K.ABBUTT\ Sectional Steam 142,976.

-BOHers.

Patented September 23, 1873.

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'1. K. sorry Sectional Steam-Baiiers. No. 142,976, Patented Septembar23J873,

JOSHUA K. ABBOTT, or CINCINNATI, OHIO.

IMPROVEMENT IN SECTIONAL STEAM-BOILERS.

Specification forming part of Letters Patent No.1 12,976, dated September 23, 1873; application fiicd April 30, 1873.

To all whom it may concern: I Be .it known that I, JOSHUA K. ABBOTT, of Cincinnati, Hamilton county, State of Ohio,

have invented certain new and useful Improvegenerators of the well-known sectional char actor; and consists of a peculiar construction of the sections, by which the generating-pipes are each connected by one end only, and a rapid circulation through the pipes, induced without the use of interior tubes. My invention further consists in the peculiar construction and arrangement of water-separatin g diaphragms in the generating-tubes.

Figure 1 is a vertical section through one 'of the sections of the'generator. Fig. 2 is a sectional perspective view of one of the section-heads used to connect the, generatingtubes together. Fig. 3 represents an end view of the preferred form of the sectionhead. Fig. 4 is the modified construction of the same for double pipes. Fig. 5 is a crosssection on line XX, Fig. 3. Fig. 6 is a cross-section on line YY, Fig. 3. Fig. 7 is a crossscotion on line Z Z, Fig. 4. Fig. 8 is a crosssection of the complete generator, showing the manner of setting- I I Each section or division of the generator is composed 'of a series of generatingtubes, A, exposed to the fire, a section-head, B, to connect the tubes A together, and hollow caps or return-bends a. Each section is constructed with a reverse diaphragm, 0 G, the part (3 operating to induce the upward current to flow into the generating-tubes, and the part (3 serving to convey the heated water from the generating-tubes in such a way that there is no conflict with the flow of water downward toward the mouth of the part (J i of the diaphragm. The top of the part 0 has a closed connection with the case of the section-head, so as to confine the upward flow of water to the supply of the generating tubes; and the bottom of the part 0 has a closed connection with the case of the section-head, so asto confine the operation of this part of the diaphragm to the conduction pels the of heated. water from the generating-tubes. The parts G O X-shaped web, 0, which forms a part thereof, as clearly shown in Fig. 2. The generating-pipes, 'to connect on each side of the web 0 to the section-heads B, may be either double, as shown in Figs. 4 and 7 connected at the ends by return bends a, or single, as shown in Figs. 3 and 6.

=Although the plain single pipes will, in connection with the peculiarly-constructed section-head, circulate the water toa considerable extent, sufficient to render the apparatus a fair steamgenerator, I prefer to separate the current of water in each of the single tubes by a diaphragm, E, which comwater of the pass to the end of the tubesA before it returns for escape.

The upper end of each section-head is enlarged at b to provide for the free separation of the steam and water at thewater-line, and to prevent violent ebullitionfrom showing too great a fluctuation in the water-line. To assist also in maintaining a steady waterline I provide, in each section-head, a pipe, D, in the center of which, the waterline is carried, a perforated diaphragm, F, in each serving to induce circulation and allow for the free escape of steam, as shown bythe arbe subdivided so as to make a separate duct for each tube.

The generator may be set in brick-work in the manner. shown in Fig. 8, or in any other preferred way.

I claim as my invention 1. In combination, with .the generatingpipes A, the section-heads B. when couare divided Vertically by an;

infiowing current to The sections are fed uniformly through a r of the entire series of structed with reverse incline diaphragms (J J In testimony of which invention I hereunto C, substantially as and for the purpose specset my hand. i -ified.-- JOSHUA K. ABBOTT.

2." The combination of generatingpipes l A, section-heads B G O, and diaphrfigins E Witnesses:

in the generating-pipes, substantially as and FRANK MILLWA D, for the purpose specified. I J. L. VVARTMANN. 

